US Bridges

KY-666 over Sibley Creek

Good

Union County, Kentucky · .10 MI West of JCT Ky 360 · Structure no. 113B00063N

Built
1952
73 years old
Condition
Good
inspected December 2023
Type
Culvert
Concrete
Length
25 ft
2 main spans
Daily traffic
56
2020 count
Owner
State
State Highway Agency

About this bridge

KY-666 over Sibley Creek is a concrete culvert carrying KY-666 over Sibley Creek in Union County, Kentucky. It was built in 1952, so it is 73 years old, older than the Kentucky average of 46.6 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 56 vehicles a day, projected to reach 56 by 2040. The structure is 25 ft (7.6 m) long and 38 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesKY-666
CrossesSibley Creek
Location.10 MI West of JCT Ky 360
RouteState Highway 666
CountyUnion County
StateKentucky
Coordinates37.74806, -87.96833
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionDecember 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating60 US tons
Inventory rating45 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadH 15
Structure length25 ft (7.6 m)
Longest span12 ft (3.7 m)
Deck width38 ft (11.7 m)
Roadway width35 ft (10.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic56 (2020)
Projected traffic56 by 2040
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was KY-666 over Sibley Creek built?

It was built in 1952, making it 73 years old in 2025.

What condition is KY-666 over Sibley Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in December 2023.

How much traffic does KY-666 over Sibley Creek carry?

About 56 vehicles per day (2020 count).

How long is KY-666 over Sibley Creek?

The structure is 25 ft (7.6 m) long with a longest span of 12 ft (3.7 m) and a deck 38 ft wide.

Who owns KY-666 over Sibley Creek?

It is owned by the State Highway Agency.